Abstract: The risk that the health of pregnant animals and their young will be impaired by gastro-intestinal infection is reduced by oral administration of endotoxins of the relevant pathogenic organisms to the pregnant animals. Combination of oral and parenteral administration is particularly beneficial, whether the animal is pregnant or not, in boosting immunological capacity. This technique is especially beneficial for mammals whose young acquire their passive immunity via the colostrum and hence through the gastro-intestinal wall, such as pigs, cows and sheep.

Abstract: Edible compositions suitable as foodstuff additives or diet supplements for humans and for animals comprising a diet supplementing agent, such as vitamins, vitamin precursors and coloring agents, and an acyl lactylate emulsifier in a weight ratio ranging from 100:1 to 1:100, said compositions having increased efficiency in uptake by a human or animal of the diet supplementing agent. A process for preparing said compositions and rearing of animals on a diet incorporating said edible compositions.

Abstract: A vaccine comprising an antigen selectively adsorbed onto erythrocytes possessing their natural surface characteristics. When the antigen is the K88a,b/adhesion factor of E. coli and the erythrocytes are chicken erythrocytes, the vaccine is especially suitable for reducing the incidence of neonatal diarrhoea in pigs if it is administered parenterally to a sow about three weeks prior to parturition.

Abstract: This invention provides a color change perfume system in which color is caused to change when the perfume in the system is effectively exhausted to the atmosphere. The invention also provides air fresheners and the like consisting of a porous carrier impregnated with the perfumed color change system.

Abstract: A multistage precipitation and flocculation production process is disclosed in which primary silica particles are prepared and flocculated useing an alkali metal salt solution and further silica precipitated in the presence of the salt, the pH of the mixture reduced and the silica isolated, purified carefully dried and optionally milled.

Abstract: A machine for weighing and sorting articles to make up packs of a pre-determined weight with the aid of a computer. The improvement is a particular drive mechanism for feeding the articles to a series of weigh heads and then on therefrom. The drive mechanism splits the motion into two components, preferably simple harmonic motions, one of which is a continuously operating vertical reciprocation and the other is a selectively actuated horizontal reciprocation.

Abstract: Process for preparing a transparent polypropylene film having good slip and non-blocking properties which comprises admixing polypropylene with a thermoplastic resin in the melt state, the thermoplastic resin having a melting point higher than but no more than 100.degree. C higher than the melting point of the polypropylene and being substantially incompatible with the polypropylene under the mixation condition, to give a polypropylene composition where the thermoplastic resin is dispersed in the form of fine particles of 0.1 to 10 .mu. in average particle size and the amount of the dispersing thermoplastic resin is from 0.01 to 1% by weight of the polypropylene, extruding the resultant composition in the melt state into a film and stretching the film in at least one direction.

Abstract: A tamper-resistant box for protecting the hooters of burglar and fire alarm systems. The box has a fixed frame to be attached to a support, such as a building, and a moveable cover separated slightly from the frame by interposed springs. Microinterrupters are sensitive to any movement of the moveable cover relative to the frame to energize the hooter when the moveable cover is touched.

Abstract: A monolithic glass construction having a continuous passageway formed therethrough packed with chromatographic packing material is used as a chromatographic column. The monolithic construction enables the column to be formed of the longest practical length and smallest practical diameter to increase the efficiency of the column, while also providing a durable column. Quick-connect and disconnect couplings to a gas feed and analysis device are mounted on the monolithic construction.

Abstract: A process for de-waxing oil comprises dissolving a polymerized polyol ester blend in a waxy oil, optionally with a solvent or diluent and cooling to crystallize out the wax using acids in the C.sub.8 to C.sub.24 range to form the esters.

Abstract: A process for treating wastewaters to reduce the ammonia content thereof comprising the steps of:A. contacting wastewater, having a dissolved ammonia content, with an ion exchanger having an affinity for ammonium ions whereby ammonium ions become sorbed onto said ion exchanger;B. separating said ion exchanger containing sorbed ammonium ions from the wastewater and then regenerating said ion exchanger and converting the ammonium ions thereon to nitrate ions by treating the ion exchanger with a concentrated salt solution and a culture of nitrifying bacteria whereby ions from the salt solution become absorbed onto the ion exchanger while ammonium ions on the ion exchanger are displaced into solution and oxidized by the nitrifying bacteria to nitrate ions; and,C. recycling the regenerated ion exchanger for further contact with wastewater.

Abstract: A grinding and cutting process and articles employing an effective amount of a grinding aid, typical of which is sodium nitrite which, when applied to the abradant or cutting edge of a tool, accelerates the modification of a metal workpiece and prolongs the useful life of the tool. The grinding aids of this invention are compounds free of sulfur and/or halogen and having a melting point in the range of 70.degree. F. to 1000.degree. F., a decomposition temperature at least 100.degree. F. above the melting temperature and a latent heat of melting greater than 10 cal/gm.

Abstract: Paper adhered to a surface with a starch-based adhesive is removed by mixing together (1) an enzyme composition containing a carbohydrase or a carbohydrase and a pratease, (2) a liquid composition containing (a) an activator for the enzyme composition, (b) a wetting agent and (c) a solvent for reducing the rate of evaporation of water from the paper, and (3) warm water, applying the resultant aqueous composition to the paper and physically removing the wet paper after the enzyme has degraded the adhesive. Prior to mixing, the enzyme composition is in a sealed moisture-proof package and the liquid composition is in another package.

Abstract: A heat transfer element having a plurality of parallel channels is formed from at least two interconnected metal foils or sheets, at least one of which is corrugated and at least one of which is flat, wherein the surfaces of the foils or sheets facing each other are coated with a weldable or sealable plastic or lacquer layer and are bonded to each other by means of these layers in their respective contact zones.

Abstract: In accordance with the present invention, it has now been found that the coagulation property of polyurethane elastomers can be considerably improved without spoiling any desirable chemical property of the original elastomer, if polyurethane elastomers which are different only in N%, are mixed together in a specified range of mixing ratio or if a polyurethane elastomer is synthesized using a mixture of polymer glycols whose structural units are chemically the same, however, whose molecular weights are different from each other in a specified range, and a solution of the obtained elastomer is coagulated by a specified wet coagulation condition.

Abstract: A process is provided for the isolation of a mammalian blood protein fraction or derivative thereof, herein termed the "deblocking protein fraction" or "DPF". The process comprises a series of centrifugal separations of blood fractions under conditions which maintain the integrity of the desired material as it existed in vivo.The deblocking protein fraction is a new material and it constitutes another aspect of the disclosure. isolated DPF, a protein or derivative thereof, is useful as a neoplastic tissue remission and prevention agent.

Abstract: A process is provided for the isolation of a protein fraction herein termed the "blocking protein fraction" or "BPF", from mammalian blood. The process comprises a series of centrifugal separations of blood fractions under conditions which maintain the integrity of the desired material as it existed in vivo.The blocking protein fraction, is a new material and it constitutes another aspect of the disclosure. Isolated BPF, a natural protein or a derivative thereof, is useful to prevent tissue implant rejection, and as standard from the determination of the tumor remission activity of other materials isolated from blood.

Abstract: A process is provided for the isolation of a blood polypeptide fraction or derivatives thereof herein termed the "tumor complement fraction" or "TCF", from mammalian blood. The process comprises a series of centrifugal separations of blood fractions under conditions which maintain the integrity of the desired material as it existed in vivo.The Tumor Complement Fraction, is a new material and it constitutes another aspect of the disclosure. Isolated TCF, a natural polypeptide or derivative thereof, is useful as a neoplastic tissue remission and prevention agent.

Abstract: Beverage compositions comprise flavor granules coated on the outer surface with a powdered beverage such as tea, cocoa or coffee, preferably prepared by coating the flavor granules in a rotating granulator.

Abstract: A powder coating composition comprising1. an unsaturated polyester which is prepared by reactingA. terephthalic acid or its lower alkyl ester, andB. an .alpha.-olefinic dicarboxylic acid, andC. optionally an organic acid having at least three carboxy groups in the molecule or its functional derivative, andD. an aliphatic or alicyclic glycol; and2. an organic peroxide and a molecular terminal cross linking or bridging agent, said powder coating composition being able to form a film having excellent properties, such as excellent gloss, hardness, impact strength, heat resistance, weatherability and corrosion resistance.